Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85709120f5e68b9d773cc93b0832fd7956e78586cf15325734ddc0c065fb5b90' 
  AND token = 'cn1qZPhLxfvfQhYG4KQ/LD+krIr7Pc6hCYa/sYeR3gk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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