Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e9b6085ee5f936b143eaa753af85b94f8716c32fef359c4613b0ba322f0fd59b' 
  AND token = 'UHDpb/nhr4+pZsvo5zZd9R0yX1IUplnS7LI3LW0olmU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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