Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '078c53fe20a750ed60bef38bf2db845ed1d54f4e9d6b89c3e6fdf92b60816bb7' 
  AND token = 'tDofKf95J4WPQluunSiGt+OWYPWi0gpXsZDh7EW8ApE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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