Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'deb61bbd45eb375d25a26492e61353e9ebafee7a90746d8509dd9c2df1287150' 
  AND token = 'GbNZL8407aRyvmNc6fnVRa4sPmyE7DKiPSkTP2c5a5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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