Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b3ba41a51d9e239144efb2234363448a804490c211f4503234255ef4d9392d4' 
  AND token = 'hhdjp2lgtkEVkyp54U7KZVuP8utq3gJxuQ2kz9RScvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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