SELECT 
  cscart_categories.category_id, 
  cscart_categories.parent_id, 
  cscart_categories.id_path, 
  cscart_category_descriptions.category, 
  cscart_categories.position, 
  cscart_categories.status, 
  cscart_categories.company_id, 
  cscart_seo_names.name as seo_name, 
  cscart_seo_names.path as seo_path 
FROM 
  cscart_categories 
  LEFT JOIN cscart_category_descriptions ON cscart_categories.category_id = cscart_category_descriptions.category_id 
  AND cscart_category_descriptions.lang_code = 'de' 
  LEFT JOIN cscart_seo_names ON cscart_seo_names.object_id = cscart_categories.category_id 
  AND cscart_seo_names.type = 'c' 
  AND cscart_seo_names.dispatch = '' 
  AND cscart_seo_names.lang_code = 'de' 
  AND cscart_seo_names.company_id = cscart_categories.company_id 
WHERE 
  1 
  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.status IN ('A') 
  AND cscart_categories.id_path LIKE '501/%' 
  AND cscart_categories.company_id = 1 
ORDER BY 
  cscart_categories.is_trash asc, 
  cscart_categories.position asc, 
  cscart_category_descriptions.category asc

Query time 0.00089

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_categories range c_status,id_path,idx_id_path id_path 767 7 Using index condition; Using where; Using temporary; Using filesort
1 SIMPLE cscart_category_descriptions eq_ref PRIMARY PRIMARY 9 mahm3t_cs443.cscart_categories.category_id,const 1 Using where
1 SIMPLE cscart_seo_names eq_ref PRIMARY,dispatch PRIMARY 210 mahm3t_cs443.cscart_categories.category_id,const,const,const,const 1 Using where

Result

category_id parent_id id_path category position status company_id seo_name seo_path
864 863 501/863/864 3D Gips Paneele 10 A 1 paneele-aus-gips 501/863
503 502 501/502/503 Steinriemchen Innen 10 A 1 steinriemchen-innen 501/502
502 501 501/502 Verblender 10 A 1 verblender 501
863 501 501/863 3D Wandpaneele 20 A 1 wandpaneele 501
504 502 501/502/504 Verblendriemchen Fassade 20 A 1 verblendriemchen-fassade 501/502
505 502 501/502/505 Ziegelriemchen 30 A 1 ziegelriemchen 501/502
506 502 501/502/506 Natursteine 40 A 1 natursteine 501/502
507 863 501/863/507 3D Holz Paneele 50 A 1 paneele-aus-holz 501/863
509 502 501/502/509 Zubehör 70 A 1 verblender-zubehoer 501/502
853 502 501/502/853 Ecken 80 A 1 corners-de 501/502
916 863 501/863/916 Gepolstertes Paneele 210 A 1 gepolstertes-paneele 501/863