Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '861c6320cdccd8ce2435fa8ff08fd749520f2f758a5eaa819fac928029f2869f' 
  AND token = 'UQagv6Wf4jKTBFhw+d3tOriuKjiLcQmsQjP/sn12BjI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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