Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '536d19785c501a54941e280d332bce7c2da1a76e5928ab04e90deebe5856c540' 
  AND token = 'xDpHXyGZtHwMy3H7h8s1cq9fGEBSBNYd/1NrdkWrUkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}