Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39b090a006be24a1fa447a8a8784f53a458220e3fca40093ce3c63abc8c8518f' 
  AND token = 'szvGebG1IjWY3Ywzo2RDjthJ0A1A7Fp2ZHIA8wQXxbY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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