Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b974f5480ea24be22383b34b50070d33c7940f5c9611511db4f3c97ece53669' 
  AND token = '1kZxvrobyIx8tuWMg0s3gli3300dj7C02M2FaHKUCQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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