Upvote:1
On the assumption that you are transiting through CDG (no flights to/from Delhi or Mexico in Orly to my knowledge), then as an Indian citizen, you can do airside transit without a visa.
As you say you have a Schengen visa (but knot knowing anything further about this visa), I would expect that you would be granted entry to France if you wanted to leave the airport.
However, are you sure you do not require a visa for Mexico? Ordinarily Indian nationals do.