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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 (
    96538, 96537, 96536, 96476, 96475, 96474, 
    96473, 96472, 96471, 96241, 96240, 
    96154, 96585, 96584, 96426, 96425, 
    96424, 96423, 96422, 96239
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00099

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	192844	96154	1	0.000	A	A	A	A
MP3	193014	96239	1	0.000	A	A	A	A
MP3	193016	96240	1	0.000	A	A	A	A
MP3	193018	96241	1	0.000	A	A	A	A
MP3	193380	96422	1	0.000	A	A	A	A
MP3	193382	96423	1	0.000	A	A	A	A
MP3	193384	96424	1	0.000	A	A	A	A
MP3	193386	96425	1	0.000	A	A	A	A
MP3	193388	96426	1	0.000	A	A	A	A
MP3	193478	96471	1	0.000	A	A	A	A
MP3	193480	96472	1	0.000	A	A	A	A
MP3	193482	96473	1	0.000	A	A	A	A
MP3	193484	96474	1	0.000	A	A	A	A
MP3	193486	96475	1	0.000	A	A	A	A
MP3	193488	96476	1	0.000	A	A	A	A
MP3	193608	96536	1	0.000	A	A	A	A
MP3	193610	96537	1	0.000	A	A	A	A
MP3	193612	96538	1	0.000	A	A	A	A
MP3	193704	96584	1	0.000	A	A	A	A
MP3	193706	96585	1	0.000	A	A	A	A
WAV	192845	96154	2	0.300	A	A	A	A
WAV	193015	96239	2	0.300	A	A	A	A
WAV	193017	96240	2	0.300	A	A	A	A
WAV	193019	96241	2	0.300	A	A	A	A
WAV	193381	96422	2	0.300	A	A	A	A
WAV	193383	96423	2	0.300	A	A	A	A
WAV	193385	96424	2	0.300	A	A	A	A
WAV	193387	96425	2	0.300	A	A	A	A
WAV	193389	96426	2	0.300	A	A	A	A
WAV	193479	96471	2	0.300	A	A	A	A
WAV	193481	96472	2	0.300	A	A	A	A
WAV	193483	96473	2	0.300	A	A	A	A
WAV	193485	96474	2	0.300	A	A	A	A
WAV	193487	96475	2	0.300	A	A	A	A
WAV	193489	96476	2	0.300	A	A	A	A
WAV	193609	96536	2	0.300	A	A	A	A
WAV	193611	96537	2	0.300	A	A	A	A
WAV	193613	96538	2	0.300	A	A	A	A
WAV	193705	96584	2	0.300	A	A	A	A
WAV	193707	96585	2	0.300	A	A	A	A