Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63f383be0c9d5cd9373d2dadb9c9f31451485cbed46c5d804f7003d5dd0b4dca' 
  AND token = 'lvLQJL8NR766FXPXeg2BpQqX80hDeG8ranc4KeBO5Fg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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