Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eb0ccae5ab3ab1e9dfb18964f4b7f2f84443d9cb12bad0c29b8143cbc32bae7' 
  AND token = 'ffH2MsKpg19jA03yOLr9sDAnlFd71xg8+iywVGMDMIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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