How to check miracale key expierd date…

Hello ,
Respected team i cant use my miracale box. since 1 month ,is it my miracale key expired? sorry for tht i dont remember expiry date. now please anyone can tell me how can i check my miracale expirey date. becoz now any miracale version not open. so i cnt see my miracale key details…

Br_@rjun_mobile