There are two parts to this answer, Hilary. The first is generic, the second depends on whether you are going the self- or trad-pub route.
So… part 1. Working title. It's only a working title, for your eyes only. And your alpha readers. And any agents, etc you send it to. As it's not published, you're not at any risk here.
Part 2. Publication. If you're going the trad-pub route, the publisher will tell you if it's an issue for them or not. (As the publisher, it becomes their responsibility.) If, however, you're going the self-pub route… have a quick chat with a copyright lawyer.
I'm guessing - and it is only a guess - that three words from the song's lyrics isn't going to be an issue. Unless the copyright owner (Sony/ATV Music) doesn't like your writing. It will, to a certain degree, depend on how "inspired" it is by the lyrics. Will the relationship be identifiable to anyone not in the know?