Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe4741b0ef13a95d58deaf8810367893e2b3d25176dbad33667e6acaf95a448c' 
  AND token = 'TC5C1FHMJw/7L1r3dhlcexPdO9ltIZZIpqui9vDQj9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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