Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da1676523e54c52ccbd2c499146be9fa7b0b8d472189828fb6799c0f62965682' 
  AND token = 'ksk34uU0gSNfqCIc9nX6XuqfXHG4foB421adbn7jspg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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