Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a64c99ca25eda48524045ca1d2ba16df3a53cb466c9545117f5b7d3108a15cd' 
  AND token = 'CJvcbkll0FnG5VY+RmjtyBD10LMqoQJl6SLXi54thtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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