Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f318f426ec1d9a86177c5f58c4588759125ee4defc1d5ac5dce1b95be46dd447' 
  AND token = 'DPU6GffMaQAi0O2WJEE9L5X2OOk5zND1q3lXthog/JU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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