Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60e457faaa9f797229f0fd7aedfa09f90e626788ed228873a47727b30f7921a3' 
  AND token = 'peMjyX0bDttJOSW+xxh2EbLr0UzoDGV74y1rSuPY1VE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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