Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62d4ed71ad6da95c283f8180c44a8d69a47f2a5b189c4c9ddc854085550990ee' 
  AND token = '6irszkX9bmLCu5A+CFV86svfuGbXCyZVy/bPlsIp9Ww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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