Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44fbe009dadeb02035f95e1eeb9098a80a69b4290a896b9909acf667ed6f0524' 
  AND token = 'YCxc9zGBekdH4ThxM5RaKzUqRk7fQaz2fXYWkekt1+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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