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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 (
    100842, 100841, 100840, 100839, 100838, 
    100390, 100824, 100823, 100444, 100443, 
    100352, 100350, 100349, 100348, 100339, 
    100324, 100323, 100322, 100321, 100320
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00094

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	201176	100320	1	0.000	A	A	A	A
MP3	201178	100321	1	0.000	A	A	A	A
MP3	201180	100322	1	0.000	A	A	A	A
MP3	201182	100323	1	0.000	A	A	A	A
MP3	201184	100324	1	0.000	A	A	A	A
MP3	201214	100339	1	0.000	A	A	A	A
MP3	201232	100348	1	0.000	A	A	A	A
MP3	201234	100349	1	0.000	A	A	A	A
MP3	201236	100350	1	0.000	A	A	A	A
MP3	201240	100352	1	0.000	A	A	A	A
MP3	201316	100390	1	0.000	A	A	A	A
MP3	201422	100443	1	0.000	A	A	A	A
MP3	201424	100444	1	0.000	A	A	A	A
MP3	202182	100823	1	0.000	A	A	A	A
MP3	202184	100824	1	0.000	A	A	A	A
MP3	202212	100838	1	0.000	A	A	A	A
MP3	202214	100839	1	0.000	A	A	A	A
MP3	202216	100840	1	0.000	A	A	A	A
MP3	202218	100841	1	0.000	A	A	A	A
MP3	202220	100842	1	0.000	A	A	A	A
WAV	201177	100320	2	0.300	A	A	A	A
WAV	201179	100321	2	0.300	A	A	A	A
WAV	201181	100322	2	0.300	A	A	A	A
WAV	201183	100323	2	0.300	A	A	A	A
WAV	201185	100324	2	0.300	A	A	A	A
WAV	201215	100339	2	0.300	A	A	A	A
WAV	201233	100348	2	0.300	A	A	A	A
WAV	201235	100349	2	0.300	A	A	A	A
WAV	201237	100350	2	0.300	A	A	A	A
WAV	201241	100352	2	0.300	A	A	A	A
WAV	201317	100390	2	0.300	A	A	A	A
WAV	201423	100443	2	0.300	A	A	A	A
WAV	201425	100444	2	0.300	A	A	A	A
WAV	202183	100823	2	0.300	A	A	A	A
WAV	202185	100824	2	0.300	A	A	A	A
WAV	202213	100838	2	0.300	A	A	A	A
WAV	202215	100839	2	0.300	A	A	A	A
WAV	202217	100840	2	0.300	A	A	A	A
WAV	202219	100841	2	0.300	A	A	A	A
WAV	202221	100842	2	0.300	A	A	A	A