Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aee4970af2bd87ff38c356fb68687af96e81f850f5495be0103b1a29621b56bb' 
  AND token = 'KIaGEaPDeSMyTr60lL566bw0HXyksRrjAPYJ7ncqvxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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