SELECT 
  link_id 
FROM 
  cscart_open_graph_data 
WHERE 
  object_url = 'index.php?activate_redirect=0&dispatch=index.index' 
  AND object_type = 0 
  AND cscart_open_graph_data.company_id = 12

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "0.35"
    },
    "table": {
      "table_name": "cscart_open_graph_data",
      "access_type": "ref",
      "possible_keys": [
        "company_id"
      ],
      "key": "company_id",
      "used_key_parts": [
        "company_id"
      ],
      "key_length": "4",
      "ref": [
        "const"
      ],
      "rows_examined_per_scan": 1,
      "rows_produced_per_join": 0,
      "filtered": "5.00",
      "cost_info": {
        "read_cost": "0.25",
        "eval_cost": "0.01",
        "prefix_cost": "0.35",
        "data_read_per_join": "120"
      },
      "used_columns": [
        "link_id",
        "object_type",
        "object_url",
        "company_id"
      ],
      "attached_condition": "((`biobronz_storeh`.`cscart_open_graph_data`.`object_url` = 'index.php?activate_redirect=0&dispatch=index.index') and (`biobronz_storeh`.`cscart_open_graph_data`.`object_type` = 0))"
    }
  }
}