Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '5e647fbeef9ccec1b86fa3823f6f1486ba515b76465262cc83690ceda8053da2' 
  AND token = 'W5RH03f38aUG7xEuycrkdmMiniKOg7xYrYG93XOxOXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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