Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d379304fba376868601d3c8bd5ea41cd8851e3c06c9c7e0d28f963050bf8385' 
  AND token = 'a8Z9VBNdOJx61T/HICnTff3t8NOoKaLGShVTZmNzJJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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