Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59fd49c6bd07ca0e84eaf97957c59eab3c85602e5baebef184388eaecb22fed3' 
  AND token = 'y6hn2MclpUGXZv6TRn/YOaftUGX/XbUneMdZtlkcZns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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