How to optimize query's execution?

How to optimize query's execution? By using hints? Here is execution plan for statement returning 3390 records in about 10 sec:

Execution Plan

   0 SELECT STATEMENT Optimizer=CHOOSE    1 0 SORT (ORDER BY)

   2    1     TABLE ACCESS (BY INDEX ROWID) OF 'MY_KEYS'
   3    2       NESTED LOOPS
   4    3         TABLE ACCESS (BY INDEX ROWID) OF 'MY_STATE'
   5    4           INDEX (RANGE SCAN) OF 'MY_STATE' (NON-UNIQUE)
   6    3         INDEX (RANGE SCAN) OF 'MY_KEYS_IDX' (NON-UNIQUE)

What can be done? Received on Tue Aug 30 2005 - 07:57:07 CDT