Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3794030fc1aa321498e384542875529a001e9a522d5ace0a8bccc8faf1b7cebc' 
  AND token = 'HEO2jf2Ti6eyi6IqXbp3AaJkGIyNh+OIcLgezbhfVko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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