Sandbox

SELECT 
  1 
FROM 
  cscart_aprilec_print_temp_designs 
WHERE 
  session_id = 'B5VM-O0H5-5I8O-OR0V-DU3D-4L9H-5KCL-WCJK' 
  AND product_id = 153 
  AND expires_at > 1777230174 
  AND confirmed = 'Y' 
LIMIT 
  1

Query time 0.00032

JSON explain

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