http://dgca.nic.in/operator/Examiners_LPR.pdf
This link has the list of all the approved ELPT examiners. If you scroll down to the end, you can see names or various CFIs. I guess if you are not employed with an airline yet, they should be able to conduct your ELPT.
http://dgca.nic.in/cars/D7G-G3.pdf
This link is for the CAR which covers the ELP. As per the CAR, the ELP has to be endorsed on you License [ICAO Lvl 4 min] latest by 05 Mar 2011. Their validity are :
Level 4 : 03 years
Level 5 : 06 years
Level 6 : Lifetime
Also a Quote from the CAR which should interest a few people :
The Certificate of English Language Proficiency issued by other organizations
recognized by ICAO or by member contracting States of ICAO, shall also be
accepted.
Hope this helps