Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bea8a030a2414afe45dde42e6d2b097b1ab9059d582f716f7dd00f32ca550cd0' 
  AND token = 'TnJO+BpnNBk3Fk5A/JBAmoajjhBnZg/stTu+nXSP2nI=' 
  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"
    }
  }
}