Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '382198d836ad6e5ff8fa7d9acf67245226a516d0687295a0960d8de45fb9c423' 
  AND token = '4bP3MASHkpJj5DRozKS860ujdMoRLIS+sFz8i+tybhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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