SELECT 
  sd.param_id, 
  sd.param, 
  cscart_static_data_descriptions.descr, 
  sd.param_2, 
  sd.param_3, 
  sd.param_4, 
  sd.param_5, 
  sd.param_6, 
  sd.status, 
  sd.position, 
  sd.parent_id, 
  sd.id_path, 
  sd.class 
FROM 
  cscart_static_data AS sd 
  LEFT JOIN cscart_static_data_descriptions ON sd.param_id = cscart_static_data_descriptions.param_id 
  AND cscart_static_data_descriptions.lang_code = 'en' 
WHERE 
  sd.section = 'A' 
  AND sd.status = 'A' 
  AND sd.param_5 = '3' 
ORDER BY 
  sd.position

Query time 0.00068

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE sd ALL section 22 Using where; Using filesort
1 SIMPLE cscart_static_data_descriptions eq_ref PRIMARY PRIMARY 9 cscart_dev_4_16.sd.param_id,const 1 Using where

Result

param_id param descr param_2 param_3 param_4 param_5 param_6 status position parent_id id_path class
169 index.php?dispatch=pages.view&page_id=2 About us 3 A 0 0 169
170 index.php?dispatch=pages.view&page_id=7 Blog 3 A 0 0 170
171 index.php?dispatch=discussion.view&thread_id=26 Reviews 3 A 0 0 171
172 index.php?dispatch=pages.view&page_id=23 Reward points 3 A 0 0 172
173 index.php?dispatch=pages.view&page_id=19 Gift certificates 3 A 0 0 173
174 sitemap.view Sitemap 3 A 0 0 174