SELECT 
  * 
FROM 
  cscart_bm_layouts 
WHERE 
  1 
  AND storefront_id = 1 
  AND layout_id = 1

Query time 0.00013

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_bm_layouts system PRIMARY 1

Result

layout_id name is_default width layout_width min_width max_width theme_name style_id storefront_id
1 Main 1 16 fluid 280 1200 bright_theme Bright_theme 1