SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aed5e11405261fe848fdb9aa922a596c4bc898b3ef81ef4ba1bb0f70d14347c2' 
  AND token = 'XfCVYcpOQL2MXpgFwOGahf47H32Hlqmnr/XCJLL/AsI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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