Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d6e6201c3a244414b85f0661c466194f5ef038bbb99364c73b8fbdad585c416' 
  AND token = 'RAppt6EvvNidFwvEDCW52+Cu/+yqDJDRmIQ/GWBQm7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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