Mysql - What is the best input to be created in this case

Question

Hello,

I have a table in the database with the product price history. This table is very voluminous having more than 1 billion records.

How can I create an index in this table, to meet the query below:

select 
    cd_produto_price,
    min(vlr_produto) as vlr_produto 
from 
    preco_produto_fornecedor 
where 
    dt_atualizacao < date(now()) 
and vlr_produto > 0 
group by 
    cd_produto_price;

Possible indices:

1. Only the dt_update field
2. Only the vlr_product field
3. Fields dt_update, vlr_product
4. Fields dt_update, vlr_product and cd_product
5. Some other option?

Note: I need to create the right Intel, because the base is already very large (disk space)