Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195d4d7e8dcf0a42a774f79dd515f77719d1435a48c94526b671ee3f9b2429b6' 
  AND token = 'c8W+YydrM7zLSCYrCX6e1KCO+sF+S4nWveW+GO373Lo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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