SELECT 
  go.grid_id, 
  go.options 
FROM 
  cscart_grid_options AS go 
WHERE 
  go.grid_id IN (
    '145', '146', '299', '296', '297', '298', 
    '307', '304', '302', '305', '303', 
    '306', '300', '301'
  )

Query time 0.00078

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "go",
      "access_type": "ALL",
      "possible_keys": ["PRIMARY"],
      "rows": 40,
      "filtered": 35,
      "attached_condition": "go.grid_id in ('145','146','299','296','297','298','307','304','302','305','303','306','300','301')"
    }
  }
}

Result

grid_id options
146 a:5:{s:9:"container";s:1:"N";s:17:"background_target";s:4:"grid";s:16:"background_color";s:0:"";s:16:"background_image";a:1:{i:0;i:204;}s:18:"background_image_m";a:0:{}}