How do you say this in Japanese? Can I get this food to go?

See a translation

これ、お持ち帰り（おもちかえり）できますか？

to go = おもちかえり
to make the food to go = おもちかえりする

Now, when you hear the same phrase, like, お持ち帰りですか？ said by restaurant staff, you'll notice there's a weird accent on も on their saying おもちかえり. This is very strange because Japanese language is generally spoken with really flat accent. I still don't know where this weird accent come from and why they do it. But, as a customer, do not imitate them. Do not put accent on も as they do. If you do to them, it can sound nothing but mocking them. (Because people do think it's a weird accent and feel sorry for them to have to say it like that for some reason.)