Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '679ef507cde52ad98496ceabfb346abf5854465ccd454577966bc289d26c1193' 
  AND token = '1VkXb1aRX3GaSccYhvPCgOBl96R6HpFvsy5mz7iDcec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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