Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f92d9cb8a94b79a6a5be083ecc5cce620a68b9bec6b4e63ca88633bef11e7560' 
  AND token = '9byftIpniI2hbkm5DabazueihfJ15vnC4J1qdlP4zag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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