Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2369c06b3745ef82571d249ba69ac469a301aa4c2dab3998467ca4283b5e5ba2' 
  AND token = 'xGRQW2fm1dHW2pRioGdwUddNtS5kZRGVR3GVq+GKO7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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