Do they sell Bento boxes ?

No

If you mean actual bento boxes you can use, no, they have prepared meals there like sandwiches and stuff though, it's near deli

Winco has small boxes of assorted Sushi. California rolls and spicy Sushi, but haven't seen Bento boxes.

Yes they do. If ur looking for little sushi plates 🍣 they have em, but they sell out towards 6 o clock. But there are plenty of other quick pre made meals besides sushi that are there 24/7; burritos, sandwiches, salads, egg n sausage bowls, orange chicken ext...nice selection. 👍