Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86dffad10dcbdda50a2f9beb4023051b32211e72fb3f18210617d47b988d465f' 
  AND token = 'fnXJicUMUrXFZj+fZcG4kc3UnQ3HkssYA8Q17uMMJ/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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