Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f89587f42b6ed70910bc36699b808e93ffed1b5b6e0e045719f36e53fc94e64b' 
  AND token = 'uWenH8O29CHfd7l/Nms56y7KHkuXN61H5E9cfMnYseA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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