I'm programming an end-to-end test for my website, but I cannot select my element.

I'm programming an end-to-end test for my website, but I cannot select my element.

You can try this...
element(by.css('[ng-reflect-index="2"]'))
However ng-reflect-* are used for debugging purposes (thanks, @alexce, for this piece of information). So you shouldn't really rely on them in your tests.