How do you write a conditional in a MySQL select statement?

I'm using MySQL, and I want to do a sort of ternary statement in my SQL like:

SELECT USER_ID, ((USER_ID = 1) ? 1 : 0) AS FIRST_USER
  FROM USER

The results would be similar to:

USER_ID | FIRST_USER
1       | 1
2       | 0
3       | 0
etc.

How does one accomplish this?