Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd23ed57e79b6faeebde1c72ba9f473781590377b798585de0273235c13c39eaa' 
  AND token = 'F350QFtpu70uqYu6JheKDR01yBD/S7LeyepndEmWOtA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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