Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1b710ab05fb76da57e20c70854d18963e00a99a9d8fb7440baea269cad1283b' 
  AND token = 'wFRElNsCMLxW6Y5rgXgS3ZwzVxKIjGaAN6Akb8EIz0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}