SELECT 
  a.variant_id, 
  a.option_id, 
  a.position, 
  a.modifier, 
  a.modifier_type, 
  a.weight_modifier, 
  a.weight_modifier_type, 
  b.variant_name, 
  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 a.variant_id = b.variant_id 
  AND b.lang_code = 'fr' 
  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 = 3 
WHERE 
  a.option_id IN (560, 719, 1368) 
  AND a.status = 'A' 
ORDER BY 
  a.position, 
  a.variant_id

Query time 0.00191

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 14 Using index condition; Using filesort
1 SIMPLE b eq_ref PRIMARY PRIMARY 9 mahm3t_cs443.a.variant_id,const 1 Using where
1 SIMPLE shared_option_variants eq_ref PRIMARY,company_id PRIMARY 7 mahm3t_cs443.a.variant_id,const 1

Result

variant_id option_id position modifier modifier_type weight_modifier weight_modifier_type variant_name
15932 719 10 0.000 A 0.000 A Non
15933 719 20 0.000 A 0.000 A Oui
14378 560 102 0.000 A 0.000 A CK02 55x78 cm
14379 560 104 0.000 A 0.000 A CK04 55x98 cm
14380 560 106 0.000 A 0.000 A CK06 55x118 cm
14381 560 204 0.000 A 0.000 A FK04 66x98 cm
14382 560 206 0.000 A 0.000 A FK06 66x118 cm
14383 560 208 0.000 A 0.000 A FK08 66x140 cm
14384 560 304 0.000 A 0.000 A MK04 78x98 cm
14385 560 306 0.000 A 0.000 A MK06 78x118 cm
14386 560 308 0.000 A 0.000 A MK08 78x140 cm
14387 560 310 0.000 A 0.000 A MK10 78x160 cm
14388 560 312 0.000 A 0.000 A MK12 78x180 cm
14389 560 404 0.000 A 0.000 A PK04 94x98 cm
14390 560 406 0.000 A 0.000 A PK06 94x118 cm
14391 560 408 0.000 A 0.000 A PK08 94x140 cm
14392 560 410 0.000 A 0.000 A PK10 94x160 cm
14393 560 506 0.000 A 0.000 A SK06 114x118 cm
14394 560 508 0.000 A 0.000 A SK08 114x140 cm
14395 560 510 0.000 A 0.000 A SK10 114x160 cm
14396 560 604 0.000 A 0.000 A UK04 134x98 cm
14397 560 608 0.000 A 0.000 A UK08 134x140 cm
14398 560 610 0.000 A 0.000 A UK10 134x160 cm