Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7b04bd811725e87749e94056f3bab5cf39fd9741acad91e6054e75c0ecbbfb3' 
  AND token = 'YIjWbT3MW7eIW//jKFAV6uWeqwJP6WTwGtGD5sMUuuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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