SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2c8cd7e902e718aa55fa12478d1475c92f93cca90c12eebfb51bc431ae49d154' 
  AND token = 'IYz7JirC6kq5jNSmFDxH+mZVGYSNwhvJ1hBf66Gw7M4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00166

JSON explain

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