Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0becac779d1a72451ae6326a7fddd4b401cfbd65faa38faa03df97452c37d74e' 
  AND token = 'WMWq180XlpZK19pnOUGucf1X61JOuF7iHXMVwgrLoLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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