Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11608c7660bd638ebff0dfb3e8f55548db1565fd136fa32a9ed42c3da5ca9bc3' 
  AND token = 'Vxh209nbfH02ExZR66hptx8MY/GWUzR59Lh8jKC/X0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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