UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'WCoukcita6t2JSJmrH0zIznVNBlMh0lcSRA6Qf7YDAc=' 
WHERE 
  key_id = '4f51abdd0ffd71de23069c9fb9864702af73823b8ea76a729771f549bcf834ca' 
  AND (
    token = 'WCoukcita6t2JSJmrH0zIznVNBlMh0lcSRA6Qf7YDAc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )