Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '757df06a57d43f45ab2ee83fddf6651b8d7a1ebec528aeec4bcf7d6b839d10de' 
  AND token = 'vxGnOI5nX9eMDw93xtmyz4ayAu1IunN7zOv8Oc0p5q8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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