Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '38358fcbe55b6df4fb5f4c78c46d928497065ffcc8b0bc9cc14e92b352af9e6c' 
  AND token = 'wTOCjoICU6apiny6Qx8mnZbiPrtrq69/doflvLnSk3U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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