Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e27da1e81911f3974e239e2681f02e64c75c1988e9c592e30eec0c02f43f24a' 
  AND token = 'hHL5VLFlAR1WiU7dY0MzqJ6m0hX3bu0zvVGthOeP06g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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