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SELECT 
  sd.param_id, 
  sd.param, 
  cscart_static_data_descriptions.descr, 
  sd.param_2, 
  sd.param_3, 
  sd.param_4, 
  sd.param_5, 
  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 = 'de' 
WHERE 
  sd.section = 'A' 
  AND sd.status = 'A' 
  AND sd.param_5 = '3' 
ORDER BY 
  sd.position

Query time 0.00073

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	sd	ALL	section				223	Using where; Using filesort
1	SIMPLE	cscart_static_data_descriptions	eq_ref	PRIMARY	PRIMARY	9	mahm3t_cs443.sd.param_id,const	1	Using where

Result

param_id	param	descr	param_5	status	position	id_path
217	index.php?dispatch=pages.view&page_id=77	FAQ	3	A	1	217
175	index.php?dispatch=discussion.view&thread_id=964	Bewertungen	3	A	10	175
176	index.php?dispatch=pages.view&page_id=47	Preise&Versand	3	A	15	176
177	index.php?dispatch=pages.view&page_id=48	Kontakt	3	A	20	177
178	index.php?dispatch=pages.view&page_id=51	Schreiben Sie uns	3	A	30	178
388	https://www.baubay.de/wiederruf.html	Rückgabe	3	A	33	388
387	https://www.baubay.de/reklamation.html	Reklamation	3	A	35	387
180	index.php?dispatch=pages.view&page_id=55	Beratung	3	A	40	180