Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72fe05b110c8bbaa81cdbd4209a9ce1704384ebcf884a77083bf8b964c461689' 
  AND token = 'lsP/yuUSSm+32CFmJETvwi8+vGUNDLH4IHZxLL/j0xc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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