Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd706e210cc9098bf112f39f6a79caf074a6defd5bd151575caa6f52f4f0a023f' 
  AND token = 'DND9LR8tSbSzpP446rb/5pk6bQLrAfqYtNmWUTDcvRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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