Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd63a8a2033270b1a818171c5c8f2c039d07debe97056f77493b72d933e82c20e' 
  AND token = 'kG/Xwnegnb1B/6zdxyxHjtl82FEIYyfjU98snMtbmIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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