Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a02705e949c1c73dac4bb0fedbbdff9888b6b57b997eb7e07b84661ebe0609f4' 
  AND token = 'MQBK2aIKQ1w1FdU/0T8r8kXZqySllR1CG9kIPTKeuck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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