Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cae56b437d29f3996afe8b50dc5028fdc18e39127c0f5fa66b64978d14ecf5a' 
  AND token = '+oEB4Brn12RCkI7hU9JH4k3A7n42oLQpgyaMLFjomD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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