Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8ebedd39821c7d7827f9353c25686c1d156c96177f9e779113008437c29b0da' 
  AND token = 'f88TK/n59SMkv1wGQpIEXKW/NWfzs7CcxLE2Rxhauss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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