SELECT 
  cscart_seo_names.object_id AS product_id, 
  cscart_seo_names.name AS seo_name, 
  cscart_seo_names.path AS seo_path 
FROM 
  cscart_seo_names 
WHERE 
  cscart_seo_names.object_id IN (7, 4, 3, 6) 
  AND cscart_seo_names.type = "p" 
  AND cscart_seo_names.dispatch = "" 
  AND cscart_seo_names.lang_code = 'ja' 
  AND (
    cscart_seo_names.company_id = 1 
    OR cscart_seo_names.company_id = 0
  )

Query time 0.00052

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_seo_names",
      "access_type": "ref",
      "possible_keys": [
        "PRIMARY",
        "dispatch"
      ],
      "key": "dispatch",
      "used_key_parts": [
        "dispatch"
      ],
      "key_length": "194",
      "ref": [
        "const"
      ],
      "rows": 24,
      "filtered": 100,
      "index_condition": "(`_testcscart`.`cscart_seo_names`.`dispatch` = '')",
      "attached_condition": "((`_testcscart`.`cscart_seo_names`.`object_id` in (7,4,3,6)) and (`_testcscart`.`cscart_seo_names`.`type` = 'p') and (`_testcscart`.`cscart_seo_names`.`lang_code` = 'ja') and ((`_testcscart`.`cscart_seo_names`.`company_id` = 1) or (`_testcscart`.`cscart_seo_names`.`company_id` = 0)))"
    }
  }
}