Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe38593ca93cdf1d0f922d24d88a2a699b80a3e769759b01764895ce431343b7' 
  AND token = 'wjyCL6PwDMMnEnn9sUbDrQcwBgYic03ojI/sC0jRV0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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