SELECT 
  cscart_categories.*, 
  cscart_category_descriptions.*, 
  cscart_seo_names.name as seo_name, 
  cscart_seo_names.path as seo_path 
FROM 
  cscart_categories 
  LEFT JOIN cscart_category_descriptions ON cscart_category_descriptions.category_id = cscart_categories.category_id 
  AND cscart_category_descriptions.lang_code = 'en' 
  LEFT JOIN cscart_seo_names ON cscart_seo_names.object_id = 278 
  AND cscart_seo_names.type = 'c' 
  AND cscart_seo_names.dispatch = '' 
  AND cscart_seo_names.lang_code = 'en' 
  AND cscart_seo_names.company_id = cscart_categories.company_id 
WHERE 
  cscart_categories.category_id = 278 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.company_id = 2

Query time 0.00036

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_categories const PRIMARY,c_status,p_category_id,idx_category_id PRIMARY 3 const 1
1 SIMPLE cscart_category_descriptions const PRIMARY PRIMARY 9 const,const 1
1 SIMPLE cscart_seo_names const PRIMARY,dispatch PRIMARY 210 const,const,const,const,const 1

Result

category_id parent_id id_path level company_id usergroup_ids status product_count position timestamp size_chart_id is_op localization age_verification age_limit parent_age_verification parent_age_limit selected_views default_view product_details_view product_columns is_trash staff_notes action lang_code category description meta_keywords meta_description page_title age_warning_message custom_header seo_name seo_path
278 258 258/278 2 2 0 A 3 30 1345240800 0 N N 0 N 0 default 0 N en Roof <h2>Why roof insulation is important? And what to use for roof insulation?</h2> <p style="text-align: justify;">Like insulation of each single part of the house, roof insulation ensures energy efficiency, prevents from moisture and mold and make your home warm. Furthermore it is good sound insulation and due to it's energy saving properties, it's environment-friendly.</p> <p style="text-align: justify;">There are a lot of products for roof insulation - <strong>EPS, mneral wool, PIR boards </strong>- all for pitch roof and flat roof. <strong>But which one to choose?</strong> First of all you should pay attantion for thermal conductivity value - the lower, the better. A different thermal conductivity value applies for each country, region, and building's wall type. To compare:&nbsp; EPS has great thermal insulation properties, it's water and mold resistant, but has a low resistance for high temperatures. Working with EPS goes really fast and comfortable. It's cheaper than mineral wool. Mineral wool provides high acoustic insulation and vapor permeability. It does not oxidize or shrink and it's not flammable. Working with mineral wool requires some experience. PIR boards gives the best insulation on the market, due to their properties, but they are impermeable products and more expensive than two others. Instead they are light, durable, easy to process and waterproof.</p> <p style="text-align: justify;">All the products are good and provide good thermal insualation, but in general EPS is used more often for insulating flat roofs and mineral wool for pitch roofs. PIR though is suitable for both types of roof.</p> EPS, mineral wool, roof insulation, pitch roof, flat roof, thermal insulation, sound insulation. PIR, attic, fireproof ✓EPS, mineral wool, PIR boards ✓for pitch roof, flat roof ✓great thermal insulation ✓energy saving ✓lower heating costs ✓environment friendly ✓sound insulation ✓comfortable attic Roof insulation | byggbay.se roof-insulation 258