Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3449a9c1e9fda86cc433e4341a87fdd771f85b4303908c094e936eeda0843a8f' 
  AND token = 'OT0KcclmaIVLWO2jHy2rgO/YlqzGEqjqIg4q+LBjUvg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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