Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59a9b1269551ca13d816fe08df6292825e48dd9752fb859efc769b37994ec6c5' 
  AND token = 'hGM8ro6eIOue8AYT17pCXqYaZbOf4XpBH9fMkHYboRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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