Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34059f8de1aaa8bc727ced3dfc21b6f9a53716038da3bbbfde7ce50763577186' 
  AND token = 'qetdreA53HZovFJ9SLG29PhAyKcSTlZDccDbNXYBWag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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