Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '34d95109838828e6b450f96400017b8b5c7bb6704cb7e6df7466a1d4f2265306' 
  AND token = 'PXOMfLYtW+bzPPE5eErNWJP7m8Na6oK8MsI++BC01wU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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