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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 (
    100256, 100255, 100254, 100253, 100710, 
    100676, 100667, 100654, 100650, 100636, 
    100618, 100617, 100616, 100615, 100614, 
    100613, 100612, 100611, 100610, 100609
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00093

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	201042	100253	1	0.000	A	A	A	A
MP3	201044	100254	1	0.000	A	A	A	A
MP3	201046	100255	1	0.000	A	A	A	A
MP3	201048	100256	1	0.000	A	A	A	A
MP3	201754	100609	1	0.000	A	A	A	A
MP3	201756	100610	1	0.000	A	A	A	A
MP3	201758	100611	1	0.000	A	A	A	A
MP3	201760	100612	1	0.000	A	A	A	A
MP3	201762	100613	1	0.000	A	A	A	A
MP3	201764	100614	1	0.000	A	A	A	A
MP3	201766	100615	1	0.000	A	A	A	A
MP3	201768	100616	1	0.000	A	A	A	A
MP3	201770	100617	1	0.000	A	A	A	A
MP3	201772	100618	1	0.000	A	A	A	A
MP3	201808	100636	1	0.000	A	A	A	A
MP3	201836	100650	1	0.000	A	A	A	A
MP3	201844	100654	1	0.000	A	A	A	A
MP3	201870	100667	1	0.000	A	A	A	A
MP3	201888	100676	1	0.000	A	A	A	A
MP3	201956	100710	1	0.000	A	A	A	A
WAV	201043	100253	2	0.300	A	A	A	A
WAV	201045	100254	2	0.300	A	A	A	A
WAV	201047	100255	2	0.300	A	A	A	A
WAV	201049	100256	2	0.300	A	A	A	A
WAV	201755	100609	2	0.300	A	A	A	A
WAV	201757	100610	2	0.300	A	A	A	A
WAV	201759	100611	2	0.300	A	A	A	A
WAV	201761	100612	2	0.300	A	A	A	A
WAV	201763	100613	2	0.300	A	A	A	A
WAV	201765	100614	2	0.300	A	A	A	A
WAV	201767	100615	2	0.300	A	A	A	A
WAV	201769	100616	2	0.300	A	A	A	A
WAV	201771	100617	2	0.300	A	A	A	A
WAV	201773	100618	2	0.300	A	A	A	A
WAV	201809	100636	2	0.300	A	A	A	A
WAV	201837	100650	2	0.300	A	A	A	A
WAV	201845	100654	2	0.300	A	A	A	A
WAV	201871	100667	2	0.300	A	A	A	A
WAV	201889	100676	2	0.300	A	A	A	A
WAV	201957	100710	2	0.300	A	A	A	A