UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mEsD9LBqf72sPyhfJJjEYzVGHPlWjfIvXCHHMiK+AvI=' 
WHERE 
  key_id = '3a465341daf12b0f23a04b397e69988a551c25d0d22a1271a98b766e0101755d' 
  AND (
    token = 'mEsD9LBqf72sPyhfJJjEYzVGHPlWjfIvXCHHMiK+AvI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )