Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73de64af5ed355109b8ddf627c6337d02cc80fef433fc9db7b09cca480fb139d' 
  AND token = 'DGNF0Fku3aJ3i3QppZ7L7E8CWZDy04BdDMy2LZaa9XQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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