Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '969c041e400f110a2b03d39bd6edb4de17b269df11125d5f979f0a7b0dd91833' 
  AND token = 'Yj0//APTqE8hGpztMe9HcZB9EW7yyZq8+hZ48E/8rIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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