Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c73610d6735e1a69b72d19148a4eeb95272d00c651234c6ac48226b93648931' 
  AND token = 'yiSGAYJ2YSBt7RTkLCJ3+Eg3kLtuPOyxHK0Z+P4sx4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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