Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57431c7170c925695b52fc8a333fe415bb283f75017f466783945ec65524dfa8' 
  AND token = 'OQZvRWT2LwPSYxTHdyJ6l70eI2TsJ2j3TxkVzN8YlD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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