If you measure the worth of a degree by its salary, you will never be satisfied, and I recommend that you do not pursue an MBA. Money is only one of many factors to consider before beginning an MBA program. The salary you have is something that most people do not get even after an MBA/Executive MBA; average salary packages range between Rs. 22 and Rs. 25 lakhs. You are already earning twice as much.
If you want to advance your knowledge of business/strategy/finance/organizational behavior and advance to a higher position where you can have a significant impact, an MBA is unquestionably a good option. However, there is no guarantee that you will earn more than 50 lakhs after completing your EMBA. Go for it if you want to learn and are willing to take a pay cut after your MBA. Don't do it if you're only in it for the money. You could invest in the stock market and watch your money double over time. MBA does not magically transform 50 lakhs into 1 crore.