Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '457f8cfb907b1ae439a56498bfafa744cddcc727e0214cb4793ea661f8962f5a' 
  AND token = 'dOy/UdYUEzR6If7krjlqdMaveQK+EGcpGUkwzJ/dp+k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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