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SELECT 
  b.variant_name, 
  a.*, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier, 
    a.modifier
  ) as modifier, 
  IF(
    shared_option_variants.variant_id IS NOT NULL, 
    shared_option_variants.modifier_type, 
    a.modifier_type
  ) as modifier_type 
FROM 
  cscart_product_option_variants AS a 
  LEFT JOIN cscart_product_option_variants_descriptions AS b ON b.variant_id = a.variant_id 
  AND b.lang_code = 'en' 
  LEFT JOIN cscart_ult_product_option_variants shared_option_variants ON shared_option_variants.variant_id = a.variant_id 
  AND shared_option_variants.company_id = 1 
WHERE 
  1 
  AND a.option_id IN (
    104515, 104356, 104300, 104299, 104297, 
    104296, 104387, 104357, 104391, 104390, 
    104359, 104358, 104317, 104659, 104354, 
    104326, 104325, 104322, 104319, 104318
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00091

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	a	range	status,option_id,option_id_2	option_id	6		40	Using index condition; Using filesort
1	SIMPLE	b	eq_ref	PRIMARY	PRIMARY	9	toolboxdigitalshop_dev.a.variant_id,const	1	Using where
1	SIMPLE	shared_option_variants	eq_ref	PRIMARY,company_id	PRIMARY	7	toolboxdigitalshop_dev.a.variant_id,const	1

Result

variant_name	variant_id	option_id	position	modifier	modifier_type	weight_modifier_type	point_modifier_type	status
MP3	209128	104296	1	0.000	A	A	A	A
MP3	209130	104297	1	0.000	A	A	A	A
MP3	209134	104299	1	0.000	A	A	A	A
MP3	209136	104300	1	0.000	A	A	A	A
MP3	209170	104317	1	0.000	A	A	A	A
MP3	209172	104318	1	0.000	A	A	A	A
MP3	209174	104319	1	0.000	A	A	A	A
MP3	209180	104322	1	0.000	A	A	A	A
MP3	209186	104325	1	0.000	A	A	A	A
MP3	209188	104326	1	0.000	A	A	A	A
MP3	209244	104354	1	0.000	A	A	A	A
MP3	209248	104356	1	0.000	A	A	A	A
MP3	209250	104357	1	0.000	A	A	A	A
MP3	209252	104358	1	0.000	A	A	A	A
MP3	209254	104359	1	0.000	A	A	A	A
MP3	209310	104387	1	0.000	A	A	A	A
MP3	209316	104390	1	0.000	A	A	A	A
MP3	209318	104391	1	0.000	A	A	A	A
MP3	209566	104515	1	0.000	A	A	A	A
MP3	209854	104659	1	0.000	A	A	A	A
WAV	209129	104296	2	0.300	A	A	A	A
WAV	209131	104297	2	0.300	A	A	A	A
WAV	209135	104299	2	0.300	A	A	A	A
WAV	209137	104300	2	0.300	A	A	A	A
WAV	209171	104317	2	0.300	A	A	A	A
WAV	209173	104318	2	0.300	A	A	A	A
WAV	209175	104319	2	0.300	A	A	A	A
WAV	209181	104322	2	0.300	A	A	A	A
WAV	209187	104325	2	0.300	A	A	A	A
WAV	209189	104326	2	0.300	A	A	A	A
WAV	209245	104354	2	0.300	A	A	A	A
WAV	209249	104356	2	0.300	A	A	A	A
WAV	209251	104357	2	0.300	A	A	A	A
WAV	209253	104358	2	0.300	A	A	A	A
WAV	209255	104359	2	0.300	A	A	A	A
WAV	209311	104387	2	0.300	A	A	A	A
WAV	209317	104390	2	0.300	A	A	A	A
WAV	209319	104391	2	0.300	A	A	A	A
WAV	209567	104515	2	0.300	A	A	A	A
WAV	209855	104659	2	0.300	A	A	A	A