I am starting a masters next year and will need to support myself. I would like to find a way to make enough money to get by, but want to primarily focus on my studies. How do I explain this when applying for jobs?

I do not have a job right now and have not worked before (I first studied Computer Science, then I did something else), so it is not just a matter of telling my boss 'Hey I want to focus on my Masters this year and then I am back'. My Masters is also completely unrelated to programming, so I cannot say that afterwards I am going to work for him and have this or that amazing skill.

Ideally, I would work 10 hours a week. Would anyone even be interested in this?