Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09654b5f6a2a2bba591bbabd549b855667fb6a58accba999c5186955080a9521' 
  AND token = 'LzUiLBgoZSN//qjHdpMjDqfQARIwuAks6LDrWaoMi5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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