UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3ZTxNNYalXRzzUooab0SwGphdUo4DveTQgEljjeI1Xo=' 
WHERE 
  key_id = '596d90d1879de1a533e8ec95b6fe589a4499e2ef509895a2d2c44427c530c78f' 
  AND (
    token = '3ZTxNNYalXRzzUooab0SwGphdUo4DveTQgEljjeI1Xo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )