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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 (
    105603, 105602, 105601, 105600, 105599, 
    105598, 105597, 105596, 105595, 105594, 
    105593, 105592, 105591, 105590, 105589, 
    105588, 105587, 105586, 105585, 105584
  ) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00097

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	211704	105584	1	0.000	A	A	A	A
MP3	211706	105585	1	0.000	A	A	A	A
MP3	211708	105586	1	0.000	A	A	A	A
MP3	211710	105587	1	0.000	A	A	A	A
MP3	211712	105588	1	0.000	A	A	A	A
MP3	211714	105589	1	0.000	A	A	A	A
MP3	211716	105590	1	0.000	A	A	A	A
MP3	211718	105591	1	0.000	A	A	A	A
MP3	211720	105592	1	0.000	A	A	A	A
MP3	211722	105593	1	0.000	A	A	A	A
MP3	211724	105594	1	0.000	A	A	A	A
MP3	211726	105595	1	0.000	A	A	A	A
MP3	211728	105596	1	0.000	A	A	A	A
MP3	211730	105597	1	0.000	A	A	A	A
MP3	211732	105598	1	0.000	A	A	A	A
MP3	211734	105599	1	0.000	A	A	A	A
MP3	211736	105600	1	0.000	A	A	A	A
MP3	211738	105601	1	0.000	A	A	A	A
MP3	211740	105602	1	0.000	A	A	A	A
MP3	211742	105603	1	0.000	A	A	A	A
WAV	211705	105584	2	0.300	A	A	A	A
WAV	211707	105585	2	0.300	A	A	A	A
WAV	211709	105586	2	0.300	A	A	A	A
WAV	211711	105587	2	0.300	A	A	A	A
WAV	211713	105588	2	0.300	A	A	A	A
WAV	211715	105589	2	0.300	A	A	A	A
WAV	211717	105590	2	0.300	A	A	A	A
WAV	211719	105591	2	0.300	A	A	A	A
WAV	211721	105592	2	0.300	A	A	A	A
WAV	211723	105593	2	0.300	A	A	A	A
WAV	211725	105594	2	0.300	A	A	A	A
WAV	211727	105595	2	0.300	A	A	A	A
WAV	211729	105596	2	0.300	A	A	A	A
WAV	211731	105597	2	0.300	A	A	A	A
WAV	211733	105598	2	0.300	A	A	A	A
WAV	211735	105599	2	0.300	A	A	A	A
WAV	211737	105600	2	0.300	A	A	A	A
WAV	211739	105601	2	0.300	A	A	A	A
WAV	211741	105602	2	0.300	A	A	A	A
WAV	211743	105603	2	0.300	A	A	A	A