SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '744dedd86a6e12358298b3df1dd7c52f5b6e62d6cc557cf7ed7b819c331389b7' 
  AND token = 'U7/FEg1561A1J84pqrDvhwoTjjxGWgRzv2fZzhU2EeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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