Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd04bd4e80590cd849b85cc4df16e7d7e7c3ca2ee2d55bd96d5532b27197a00c9' 
  AND token = 'j9MuOujjeS7UJOQn84c+xhjuPWy0GJ7U074lNbHBo88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}