Hi, I am an indian citizen, came to thailand on a 60 days single entry tourist visa to visit my daughter and wife, the visa expires on may 2nd. Is it possibe to extend my visa?

A visa cannot be extended. Only the 60 day permit to stay you got on entry can be extended for 30 days.

I am not sure what immigration's current policy is for you to obtain the extension is. Those from certain countries cannot get the 30 day extension. You should check with your local immigration office or call 1111.