Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8442fae69d6bf201220b5b55c9f1a1eef717f9a20efe4d82f80aba8cdae24bd3' 
  AND token = 'DZIwwkenOWf4OzfJNApg76tbFJBiuZXpOZGhotXSo+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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