UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'P76KU0IVAYDUtun3jy09MYNguOWVkb24oI+G2koVtG8=' 
WHERE 
  key_id = '8bc54d6313fb588efd9971834eb4bff700ad5ccc9dd87413595dcb26f1902c94' 
  AND (
    token = 'P76KU0IVAYDUtun3jy09MYNguOWVkb24oI+G2koVtG8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )