I don't think that doing masters at this age would be of any benefit. Even after doing your masters you are going to give your 2 years and after that your age will be an actor and you cannot start your career at the age better you can use your experience and get promotion by your work because degree wont help you at this age.

The other factors is that you need to give time to prepare for the exam at this is it is not very ideal age to prepare for competitive exam in also there is not any guarantee of success in the exam.