Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9d2ed091885405c404c0939c5d251c61757c7268775af4f012eb910d9e94527' 
  AND token = 'ZYn8sX5nqRTWi8PpR6e41Ygo0bWy7tgUz1J6rwqMByI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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