Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8964a4765b9d1ea56d98d2eaf55958b65e6e602786b5b4e6fce8239a0e9a9c57' 
  AND token = 'mhnzs0tfLQGytz5mM9+E+KGkhzUzf+9Yv4Q6oozfptc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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