Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '02cd1cd55894a55ed8d6590f39102b4639ad84f47200710c62c0316ba365f919' 
  AND token = 'qaPcjwVEtqygFJF6O5L7pfJL3QkMUoXUqXt18Ln8ezI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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