UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '8lxYz81yzltE8jl2FcBe1O10LqL/97e+7L7fzPSky2U=' 
WHERE 
  key_id = 'f3834293970ea5cb9a4c94d9187de6112d861b1c75d66d36531dc076329e6b04' 
  AND (
    token = '8lxYz81yzltE8jl2FcBe1O10LqL/97e+7L7fzPSky2U=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )