Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eccb5d8db01feca8d04320a35bb0aac87e4093adac2926801e452a46c8b8cc24' 
  AND token = 'b4GC67n+4RMrX0AZa0Du0GLFSyOaNu2zTFHQYvzbHdE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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