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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c01c9a7f75e224dff3ece0fd619960e7b41fbea0c6189d46c3819e94ec58747c' 
  AND token = 'VTGOUYl4C/CNUDic34RvKvsm9WM1QT4yfdflax9yPIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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