Sitting at Egmore metro, flight at 10pm , need suggestions.

Hello Chennai, I am sitting at Egmore Metro station, with a ticket to Central Metro. I have my flight at 10pm, suggest me something to do in the meantime. Just came back from museum. Also I need to pickup my luggage from the hotel near Lic Metro station. Suggest something with direct Metro connectivity. Beaches preferred, but it’s too sunny right now. Maybe sunset near a beach? How about N4 beach?