Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d0ae9b67887b6bb84359b9dfc0c5678d8beb70e803185f94d1e7b541aa4b155' 
  AND token = '4NsUFesA+fHg311EcB9A4zu7OM2YXemDzMX80GR24wo=' 
  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"
    }
  }
}