Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fbcd853f956e9c36cabaeb11b302ddbdc9793b95945ec034ae03f05fbfce1c7' 
  AND token = 'j7G1jex+mt9hRGSevA5tV+ehDRDLdYaBpozYDbZ/1R0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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