Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ebef6fd16e90353c80cc0709f0e9fb1e0166015b4115f1df5a107006dae9ae1' 
  AND token = 'wnG0RoiEUO0kjvEYipvQcyVdFOh64o+k/qrE2yT5v8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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