Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a301b45aa649a6de10af761fb492051caa4cb5526d15d16c26cd3afdaa92da7b' 
  AND token = '8X3hSy0Lj1ntx1A5Ly05jNgtpVOueJstrLQbD8VJOsg=' 
  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"
    }
  }
}