Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '659ffd7905b6abbf068b6b7ef6d8892fb598f9d9b4b79453c1c20ed5242a3ef8' 
  AND token = 'dVEqO9MkNX4qdpWiW3gXn8+5gbkwg8hm0vJMEST7mhk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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