Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af811ca5634645055776e0f2187cbca8c578e79ebed3e48ed3150d4c87ba9bc5' 
  AND token = 'lxoYFzshWWwU5MlcPtq0ezrZX5xnr61LWhTk78rsdbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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