SELECT 
  cscart_settings_objects.object_id as object_id, 
  name, 
  section_id, 
  section_tab_id, 
  type, 
  position, 
  is_global, 
  cscart_settings_objects.name as description, 
  IF(
    cscart_settings_vendor_values.value IS NULL, 
    cscart_settings_objects.value, 
    cscart_settings_vendor_values.value
  ) as value 
FROM 
  cscart_settings_objects 
  LEFT JOIN cscart_settings_vendor_values ON cscart_settings_vendor_values.object_id = cscart_settings_objects.object_id 
  AND company_id = 1 
WHERE 
  1 
  AND section_id = '157' 
  AND (
    FIND_IN_SET(
      'ROOT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'VENDOR', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:ROOT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:VENDOR', cscart_settings_objects.edition_type
    )
  ) 
  AND cscart_settings_objects.type <> 'H' 
ORDER BY 
  cscart_settings_objects.position

Query time 0.00080

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_settings_objects.position",
        "table": {
          "table_name": "cscart_settings_objects",
          "access_type": "ref",
          "possible_keys": ["section_id"],
          "key": "section_id",
          "key_length": "4",
          "used_key_parts": ["section_id"],
          "ref": ["const"],
          "rows": 12,
          "filtered": 100,
          "attached_condition": "cscart_settings_objects.section_id <=> '157' and (find_in_set('ROOT',cscart_settings_objects.edition_type) or find_in_set('VENDOR',cscart_settings_objects.edition_type) or find_in_set('ULT:ROOT',cscart_settings_objects.edition_type) or find_in_set('ULT:VENDOR',cscart_settings_objects.edition_type)) and cscart_settings_objects.`type` <> 'H'"
        }
      }
    },
    "table": {
      "table_name": "cscart_settings_vendor_values",
      "access_type": "eq_ref",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "7",
      "used_key_parts": ["object_id", "company_id"],
      "ref": [
        "orbit_cscart_orbit_cscart.cscart_settings_objects.object_id",
        "const"
      ],
      "rows": 1,
      "filtered": 100
    }
  }
}

Result

object_id name section_id section_tab_id type position is_global description value
6326 currency 157 158 S 0 N currency RUB
6331 api_version 157 159 S 0 N api_version 4
6327 statuses_paid 157 158 M 10 N statuses_paid
6332 mode 157 159 S 10 N mode
6328 statuses_refund 157 158 M 20 N statuses_refund
6333 atol_inn 157 159 20 N atol_inn
6329 sno 157 158 S 30 N sno
6334 atol_group_code 157 159 30 N atol_group_code
6330 extra 157 158 D 40 N extra {"payments_map":[]}
6335 atol_payment_address 157 159 40 N atol_payment_address
6336 atol_login 157 159 50 N atol_login
6337 atol_password 157 159 60 N atol_password
6338 atol_test 157 159 E 70 N atol_test atol.tpl