Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea69f2b5431337d858daac28c77c3d493a1703893094a2a3e7fe4ac7a5913d58' 
  AND token = 'Xn3/1R0qqFjakUIfO1TxTKr1/275KbqZ82TNbqKODOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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