Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27397b030f8a571d9b396936f687fe85c6481066fee8528be8e85ad8bd7f0398' 
  AND token = 'VdwDCXIeSnhi9LyaBLGpQDT4Bh8kFcVN1mgPp0bcFHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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