Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95db015b1eb5cbc900393d9d525c7c92be12a087ba0fd4954c2fcada19cba31e' 
  AND token = 'wsnw1jKiw/8hOQjQXxO1WDxRbcymOwlA2T9xEIgEklc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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