Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f161b696deb042ad7654c51fe9c06326d4e92a38749138e11c6a063a42689150' 
  AND token = 'fAjYT+rCegEkKNpQENiur5Zs4QjfjY0PQsoVxIxMXEw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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