Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5343e3a3225186c40fdc934b866e9d17d943e0af742b9a10cc171514fcdf30bd' 
  AND token = '24QNVrkmFJP8EaYgRzQaVEDlc2gQl7jU9fEV+X9Fvkg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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