UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '8qdFD8DTPk6tt6GjTfk5GtB86XwlpBedZt5oLcOB+ak=' 
WHERE 
  key_id = '5230854097ea1ffdda019e5b91dac766de22a59da6dfe83cf51e8a1d91ab4844' 
  AND (
    token = '8qdFD8DTPk6tt6GjTfk5GtB86XwlpBedZt5oLcOB+ak=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )