Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3ea14183086f78d6c5fe76a858b6cff99199cc5b93ebff2566120654baf98698' 
  AND token = 'I7hmyhH0RneneTFcEfyh8dwvm2hSDU43jV3vHTVRc7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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