SELECT 
  `data` 
FROM 
  cscart_stored_sessions 
WHERE 
  `session_id` = 'e0556e5dc9f29bfda2d8900c14c362c1-1-C'

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}