Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '6d7ddfa7b0445efa2d7f323b67fb2c8dfa49ae1aaf4f835e986e987cf061c27f' 
  AND token = 'IkDO5ll4J9lmm2Buu27tbK5FsgCLzg+cOGQtRSFlnrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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