Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '468f8d62de77ff6ce3b67eb7682855dcbbc8ed58d2e60a8c51963c7d9e410612' 
  AND token = 'Q7i5sXbHd4oiX6jHAUv3XTHdyk15R2CcNskar/ptcMI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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