UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '7xzHq9ji+kmmq019w9BPTa31Bf0EApiMeY9mOVchn9s=' 
WHERE 
  key_id = '540f6ca54e1c39deb608709ddb7af0a046b55e94f024b7d688e955770a318ae2' 
  AND (
    token = '7xzHq9ji+kmmq019w9BPTa31Bf0EApiMeY9mOVchn9s=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )