SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be653ee77834c4fe32f56db6f9daa278f04f20d6099db072895ff45cb49b07ff' 
  AND token = 'TOmTixhUWqnNYiXChuPEvxd/Q/I3HYisu8zFXR3jDTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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