I remember reading in a paper a word that means “query predicate can be evaluated using an index” but I can’t recall the word. For example if you had a table with a column called “name” and you had an index on name, then a query that had a WHERE clause involving “name” could be succinctly described by this word as “An X-able query”, where X is the word I don’t remember.
The word you're looking for is "SARGable". From Wikipedia:
In relational databases, a condition (or predicate) in a query is said to be sargable if the DBMS engine can take advantage of an index to speed up the execution of the query. The term is derived from a contraction of Search ARGument ABLE.