Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '628bd05c4c78f2721ca4757fcd26ef32392502db38f488ae8a674ab88e2c043f' 
  AND token = 'EscJ9eys/zAryd9nCZasjkeZdstorP8oyrWf8Gq2rp8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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