Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00692656cf0a911b3f5576c290eee1c4dd801798214f46442a42bb8e6ffdb8ad' 
  AND token = 'VfRl2bGltNDjqLJS3k3DLx/xL5m0oviLP/iBigOuo8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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