Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '291b2af78bc59183ca77c64788235345f740b623a3720de1dfe65361635516d2' 
  AND token = 'F2mp4roUDWaF3CywHIhUTIYcVFb3OX2+oio968GRg5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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