UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'B2fohNUVe+OabtUVzh9Oa9AIrEx+7atfN5/4tjwE9Io=' 
WHERE 
  key_id = '835156543ae00a726a4fc6cc7e7e7352aaf62928043373f27048ab06f96ad4e4' 
  AND (
    token = 'B2fohNUVe+OabtUVzh9Oa9AIrEx+7atfN5/4tjwE9Io=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )