Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2811127402cecdf3d27ab6e2ab78ccec559e4d596dccd397d51237b72bf12fb6' 
  AND token = '1XBGdlfBRDqYEpf8Azd0yDNh0ganirzAtgUUL9bqKr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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