Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3011e67692a87dc1a67da7fee3d4fc30192180000d5414eb4acc59c32322683' 
  AND token = 'WVePHVy1WEGxvTvvwvbBBZD6CtU6fKMSOAdVNf5Kfmc=' 
  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"
    }
  }
}