UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Ju7SfUsky9fSyEUS16av1I8n8+WtZ6qZkZOxe+58r74=' 
WHERE 
  key_id = '50a88b0b3f0da93fa95d7d5933da29d02adbfccbeef93301c3885c681c3fc0e8' 
  AND (
    token = 'Ju7SfUsky9fSyEUS16av1I8n8+WtZ6qZkZOxe+58r74=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )