Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '224b39236a16283b61f37de3d6f2f97692fe4894f54fbfe021b0e7bcc0dfe977' 
  AND token = '3nJJcD8P9H+eraBIJEJKjV/xzIy71EOARny4pX5uu0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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