Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ec6aee647e852b4e49ad65f6432fe4f6aecce7b414fc16f1763ab2636a3eb815' 
  AND token = 'MWJi83+kqITQG+IKYbmx+OxKlkkrE8ztmvEcEeSM2I4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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