UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'a75Oh6NNvhFnETq3yIPTtI9nimj04icwahwjvhPCJTY=' 
WHERE 
  key_id = '48068538581ecf3c121c435a332c71435c893c7fdfae83b4ad52132dd14998e6' 
  AND (
    token = 'a75Oh6NNvhFnETq3yIPTtI9nimj04icwahwjvhPCJTY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )