Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e6451333330157e111dd28332a7edcb20d79ffdd32bea9930589ce9d7e98e37' 
  AND token = 'ZPE217MVtmS2Wcpz4OBEP6Fp4wT82ujzIFmFCOL5IBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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