UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'N8pTcH7GKAT/G9kzPS29FySi3hlmuiUzPrf5FssvBKU=' 
WHERE 
  key_id = '6e55c7ed0082197292621769b7194f1e2695df1d935e67c952a26562f7ace44e' 
  AND (
    token = 'N8pTcH7GKAT/G9kzPS29FySi3hlmuiUzPrf5FssvBKU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )