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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 (
    90546, 83866, 91343, 91335, 91042, 87447, 
    91310, 91302, 91241, 119860, 90381, 
    90380, 90379, 90378, 90377, 90376, 
    90375, 90374, 90373, 90372
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00114

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	168268	83866	1	0.000	A	A	A	A
MP3	175430	87447	1	0.000	A	A	A	A
MP3	181280	90372	1	0.000	A	A	A	A
MP3	181282	90373	1	0.000	A	A	A	A
MP3	181284	90374	1	0.000	A	A	A	A
MP3	181286	90375	1	0.000	A	A	A	A
MP3	181288	90376	1	0.000	A	A	A	A
MP3	181290	90377	1	0.000	A	A	A	A
MP3	181292	90378	1	0.000	A	A	A	A
MP3	181294	90379	1	0.000	A	A	A	A
MP3	181296	90380	1	0.000	A	A	A	A
MP3	181298	90381	1	0.000	A	A	A	A
MP3	181628	90546	1	0.000	A	A	A	A
MP3	182620	91042	1	0.000	A	A	A	A
MP3	183018	91241	1	0.000	A	A	A	A
MP3	183140	91302	1	0.000	A	A	A	A
MP3	183156	91310	1	0.000	A	A	A	A
MP3	183206	91335	1	0.000	A	A	A	A
MP3	183222	91343	1	0.000	A	A	A	A
MP3	240256	119860	1	0.000	A	A	A	A
WAV	168269	83866	2	0.300	A	A	A	A
WAV	175431	87447	2	0.300	A	A	A	A
WAV	181281	90372	2	0.300	A	A	A	A
WAV	181283	90373	2	0.300	A	A	A	A
WAV	181285	90374	2	0.300	A	A	A	A
WAV	181287	90375	2	0.300	A	A	A	A
WAV	181289	90376	2	0.300	A	A	A	A
WAV	181291	90377	2	0.300	A	A	A	A
WAV	181293	90378	2	0.300	A	A	A	A
WAV	181295	90379	2	0.300	A	A	A	A
WAV	181297	90380	2	0.300	A	A	A	A
WAV	181299	90381	2	0.300	A	A	A	A
WAV	181629	90546	2	0.300	A	A	A	A
WAV	182621	91042	2	0.300	A	A	A	A
WAV	183019	91241	2	0.300	A	A	A	A
WAV	183141	91302	2	0.300	A	A	A	A
WAV	183157	91310	2	0.300	A	A	A	A
WAV	183207	91335	2	0.300	A	A	A	A
WAV	183223	91343	2	0.300	A	A	A	A
WAV	240257	119860	2	1.500	A	A	A	A