Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6b6f7f83e92bc878186077cc98ab5d8b058a5506a77eca006f73c68c353efe9' 
  AND token = '25Le7WeOIjeIou4YMbdwNXOVtXG4QVD0O9VQJKXIrwo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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