Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae376d5bae4599dcfc3804bdbedabb508770f95715ab92be3fea611c016b1694' 
  AND token = 'fpwTzmtfhNoIWjQBE5ZgdWxJyA72fQIQHX4LVxtXfiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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