Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8338b426c2f6089e2ab3b2da0994eac24d01c5b92f874e5629713f272222d7dc' 
  AND token = 'lYwetwxr/xjIQtj8DkypN6ZGK6+x0UJY6GVnOWQd1W0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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