Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac67df27db47643840e08238add32b3a11a4cb472701eaf9087dae3883ff38c9' 
  AND token = '7xrSc1UhbDVO6nkeN54u4wmAg9N6gE+SRr/YyWIwKAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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