Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03a4b4c22c3fb90960fd8730d4e1329b09a5b38e3a7b9dcf812f835ed431dbf6' 
  AND token = 'q8kwendpAku070pPcscWAFLFzoLoDchD34hWiezHK7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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