Sandbox

SELECT 
  1 
FROM 
  cscart_aprilec_print_temp_designs 
WHERE 
  session_id = 'X6DB-Z19R-MRQF-X5A1-L0DR-OY6S-Y8G8-B7TW' 
  AND product_id = 165 
  AND expires_at > 1778223045 
  AND confirmed = 'Y' 
LIMIT 
  1

Query time 0.00048

JSON explain

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