Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17a47de7f05a6b124bbba63cf55ef4610c16100cf5f65b44300693bf6051068c' 
  AND token = '31yXIM0qdre0BAcnaOQhPQz7dtYVDan2iY9TG/I0ggs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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