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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'c5a1c49f0ee3188fa0d065aecb974b749668db5adb9cb44e2710a1dc1db6a372' 
  AND token = 'HWu87H7PMishz17Z4hW5v0p72A0983vZiNI0oGztydk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00007

JSON explain

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