SELECT 
  COUNT(*) 
FROM 
  cscart_states 
WHERE 
  country_code = 'IN' 
  AND code = '32' 
  AND status = 'A'

Query time 0.00072

JSON explain

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