Preposition "a" with infinitives

[bricks]

Hello friends.

I would like to as a very simple question. When using the preposition "a" before an infinitive to indicate the start of an action, can I only do this for the present tense, or can it work for past and future too?

"Voy a jugar contigo."

The above example is "I am going to play to you". "I am going" can be used for present and future in English so I am confused.

So would this work:

"Yo sere a jugar contigo."

Thanks