Right now (or maybe in a bit)

Ahora mismo

ah-OH-rah MEES-moh — Right now / right away

"Ahora mismo no puedo, te llamo luego."
I can't right now, I'll call you later.

"Ahora" on its own is surprisingly flexible in Spain — it can mean "in a bit." Add "mismo" when you really mean this very moment.

"What I promise about answering messages — and sometimes, honestly, it means in an hour."— Graciela