Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc62def54107bbe5ec044850353e6b56fe228f2f408d9224f64c9bc632b502e9' 
  AND token = 'VEVAiZ14NkaXQRyb6FMa4fbd4pPyvy5/5A2lu9nXr/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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