Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f297da2af787a338910f4e70ae741143615ecabe604a9280cb60ba36c72033f' 
  AND token = 'Psu1lM3J8hJCBmLQYsG2csz7Kq1MDsiXN7R9rakpKOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}