Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '304fe87a19179d76cb460df59aeeb769cf967adc796bf2a906258ea3377efed4' 
  AND token = 'ggAMtdDx3BsNQLPqCmUXuRxmQd6IKw3BnBDQsLIb0FM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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