Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61160a831640648b945c98d7a50739b2cd5985e454c7a15cdd46937a47eb238e' 
  AND token = 'KCf13lF1p5j9aCNysDszuzQ3CKN1irdJUYpCQZBj5/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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