Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd015be71b348c8d4b2f2bc922445bdadfdf1c1a2c5f9e36d18529390f8ce5820' 
  AND token = 'UeZe5RUdEp7JgzQ1P/9xs3RUq52mmqbmgO8fHmGNDdw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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