Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07bf726f87446b76911a4e199bc8c0b464b8fcbc70fa4af912bb0ff536e5f3d6' 
  AND token = 'y6mritj4gT1Lg7R70XEAxSxmWWZ/wZ9CysQZBT7wCZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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