Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e427b96ae520903f80eb42482c8d9c6b71981a657ab92f62ac049e2aa26f99c' 
  AND token = 'sOxT5Fm+TUKwklafksIUQ01pPATRTh7XI7sUjXfKdOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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