Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '822b87db8bb510bf4f6369920808f447d7e80794eadce51c3d8567d0deb8bba6' 
  AND token = 'LU5UE5633n8gA82KJZexoomvP6dMDrWL7P20GimhGE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}