Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e7a7530838a38dc0dd2016589d8414626072e49828eb7a36823cd2e41cc836f' 
  AND token = 'cljV3UIIwEk3UnbpcQQzWsc9qMLGhZP6ubH1HVt/UrU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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