Sandbox

SELECT 
  1 
FROM 
  cscart_aprilec_print_temp_designs 
WHERE 
  session_id = 'Z4DV-SW9R-R6VG-ERII-SR0B-HBED-L6C7-8LDX' 
  AND product_id = 150 
  AND expires_at > 1777112581 
  AND confirmed = 'Y' 
LIMIT 
  1

Query time 0.00036

JSON explain

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