SELECT 
  lang.name, 
  IF(
    vi_ult_language_values.value IS NULL, 
    lang.value, vi_ult_language_values.value
  ) as value 
FROM 
  vi_language_values lang 
  LEFT JOIN vi_ult_language_values ON vi_ult_language_values.name = lang.name 
  AND company_id = 1 
  AND vi_ult_language_values.lang_code = lang.lang_code 
WHERE 
  lang.lang_code = 'pl' 
  AND lang.name IN (
    'block_abt__ut2_advanced_subcategories_menu_description', 
    'block_abt__ut2_contacts_manually_description', 
    'block_abt__ut2_lite_checkout_place_order_button_description', 
    'block_ab__deal_of_the_day_description', 
    'block_ab__fast_navigation_description', 
    'block_ab__fast_navigation_categories_description', 
    'block_ab__promotion_categories_filter_description', 
    'block_abt__ut2_fly_menu_description', 
    'block_ab__motivation_block_description', 
    'block_ab__multi_deal_of_the_day_description', 
    'block_abt__ut2_block_opener_description', 
    'block_abt__ut2_lite_checkout_promotion_coupon_description', 
    'block_ab__promotion_main_data_description', 
    'block_ab__promotions_description', 
    'block_ab__vg_videos_description', 
    'block_banners_description', 'block_html_block_description', 
    'block_smarty_block_description', 
    'block_safe_smarty_block_description', 
    'block_product_filters_description', 
    'block_product_filters_home_description', 
    'block_gdpr_description', 'block_main_description', 
    'block_languages_description', 
    'block_rss_feed_description', 'block_categories_description', 
    'block_lite_checkout_newsletters_description', 
    'block_geo_maps_customer_location_description', 
    'block_our_brands_description', 
    'block_menu_description', 'block_payment_methods_description', 
    'block_shipping_methods_description', 
    'block_my_account_description', 
    'block_breadcrumbs_description', 
    'block_blog_description', 'block_product_bundles_description', 
    'block_store_locator_description', 
    'block_products_description', 'block_testimonials_description', 
    'block_pages_description', 'block_template_description', 
    'block_tags_description', 'block_currencies_description', 
    'block_gift_certificates_verify_description', 
    'block_call_request_description', 
    'block_checkout_description', 'block_lite_checkout_customer_address_description', 
    'block_lite_checkout_customer_billing_description', 
    'block_lite_checkout_customer_information_description', 
    'block_lite_checkout_customer_sign_in_description', 
    'block_lite_checkout_location_description', 
    'block_lite_checkout_payment_methods_description', 
    'block_lite_checkout_terms_and_conditions_description', 
    'block_lite_checkout_shipping_methods_description', 
    'block_lite_checkout_customer_notes_description', 
    'block_cart_content_description'
  )

Query time 0.00289

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "vi_ult_language_values",
          "access_type": "system",
          "possible_keys": ["PRIMARY"],
          "rows": 0,
          "filtered": 0,
          "const_row_not_found": true
        }
      },
      {
        "table": {
          "table_name": "lang",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "392",
          "used_key_parts": ["lang_code", "name"],
          "rows": 56,
          "filtered": 100,
          "index_condition": "lang.lang_code = 'pl' and lang.`name` in ('block_abt__ut2_advanced_subcategories_menu_description','block_abt__ut2_contacts_manually_description','block_abt__ut2_lite_checkout_place_order_button_description','block_ab__deal_of_the_day_description','block_ab__fast_navigation_description','block_ab__fast_navigation_categories_description','block_ab__promotion_categories_filter_description','block_abt__ut2_fly_menu_description','block_ab__motivation_block_description','block_ab__multi_deal_of_the_day_description','block_abt__ut2_block_opener_description','block_abt__ut2_lite_checkout_promotion_coupon_description','block_ab__promotion_main_data_description','block_ab__promotions_description','block_ab__vg_videos_description','block_banners_description','block_html_block_description','block_smarty_block_description','block_safe_smarty_block_description','block_product_filters_description','block_product_filters_home_description','block_gdpr_description','block_main_description','block_languages_description','block_rss_feed_description','block_categories_description','block_lite_checkout_newsletters_description','block_geo_maps_customer_location_description','block_our_brands_description','block_menu_description','block_payment_methods_description','block_shipping_methods_description','block_my_account_description','block_breadcrumbs_description','block_blog_description','block_product_bundles_description','block_store_locator_description','block_products_description','block_testimonials_description','block_pages_description','block_template_description','block_tags_description','block_currencies_description','block_gift_certificates_verify_description','block_call_request_description','block_checkout_description','block_lite_checkout_customer_address_description','block_lite_checkout_customer_billing_description','block_lite_checkout_customer_information_description','block_lite_checkout_customer_sign_in_description','block_lite_checkout_location_description','block_lite_checkout_payment_methods_description','block_lite_checkout_terms_and_conditions_description','block_lite_checkout_shipping_methods_description','block_lite_checkout_customer_notes_description','block_cart_content_description')"
        }
      }
    ]
  }
}