Where enter CQL query ?

[Art]

I'm using Confluence 7.0.1. I have a CQL query written to find all pages that have not been modified since the start of the year. Here it is:

lastModified < startOfYear()

Now I'm ready to invoke this query, but when I paste it into the Search field in Confluence, I get this result:

"We couldn't find anything matching "lastModified < startOfYear() "."

Same result when I paste it into the Advanced Search search field.

I must not be entering the search query in the right place. Where is the right place?

Thanks.

[Art]

I realize that the Search field is for entering strings of text that are to be the subject of the search. But I was hoping there might be an escape character that would cause the Search field to treat the entered text as a search command, rather than being a search string itself.

But maybe there is an entirely different place to input the CQL query.