SELECT 
  data 
FROM 
  cscart_storage_data 
WHERE 
  data_key = 'ab__p_design/themes/abt__unitheme2/css/standalone.9663224a58fc84ffb51775feb620e40d1788161568.css'

Query time 0.00006

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}