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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '4154c63ef90d1973c294f5fc72a955828fa2c81a762c9c4dc3c830d0ca023805' 
  AND token = 'EUgJFUpi6x7FQelHE1sNQA66Zh6fCQyAlYvz57P63JI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}