Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '05b27aa1cd2dd91238d9f81a53942a35ec2d012dd039282ff3c72dc94be71be3' 
  AND token = 'svCZTj/AusEFM32PiKRteGKpTd2vcTZk73RiRDqUSYw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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