Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '132db600eb16876edd6e72ebdae0a5f56537cae18f0d5c94daffa2aab5d71ebb' 
  AND token = 'jxg6GPIRP+zZKAcm57ZVckJAWwxnPdvAHQX5LEjXiAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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