Yea my temperature wont go over 45 celcius soo about that i dont have to worry. Thanks guys ! 
That's honestly to low temp and i am sure your card could live for long. .As of now i have 1070 dual and 1080ti the differences is my temp in 1070 is more higher than 1080ti super jetstream so i set my clock lower in 1070 just to keep the temp around 65c just to be sure that my cards can live and run 24/7
Also to increase the life of your cards always clean your cards every month use blower to clean it because it gives more heat in your card..