Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f636c869748798c636ac0bf3daa9da89c93810fc6db9968839e86cc457fc5ddf' 
  AND token = 'UI2jlJ4KlU154JNJKUyBGcv+37RvH1CX39phulVaWJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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