UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'pkn6PfWWumai/PwoM1j/DXuk38tWJuOvB0LtrEtFfjk=' 
WHERE 
  key_id = '4c950c50e41a1f7bed19d04fced31f3c8adaee751e740831fb68155c79d484b3' 
  AND (
    token = 'pkn6PfWWumai/PwoM1j/DXuk38tWJuOvB0LtrEtFfjk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )