Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34882d40310a8e97ebb535f573d2554e6017b17ea5a4285e39437188e9e291d4' 
  AND token = 'LLlbESwTGsTDAXfWtPzQ1L+C176TJ53OrmJQN9BYX9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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