UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'W2RfjjwiKHNueVhiWxqo1lq0DpJwTm4AQeVUJhtPhVE=' 
WHERE 
  key_id = '6ce936c15c62e87ea5fbd45a6b7dceb86e98f63beb508965a2c891f3a6dac35c' 
  AND (
    token = 'W2RfjjwiKHNueVhiWxqo1lq0DpJwTm4AQeVUJhtPhVE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )