How to optimize a simple select * from table query?

Question

MySQL

Have a request

select ot.* from `my_table` as ot where ot.field01='11' and ((ot.field02='22' and ot.field03='33') or ot.field04='44' or ot.field05='55') order by ot.field06 desc limit 0, 20

But it runs 0.02, but I want it to run 0.002.
Tell me, please, how can this be done? Indexes stand on each of the fields and set for the entire group.

Answer 1

describe/explain
indexes do not exist for this and are not composed in this way.
habrahabr.ru/post/70640

Answer 2

First of all, forget what happens * this is bad practice
Show indexes on the table and preferably create_table