Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef222c3abeb7c80a084a802dc55fb4d1837de7418a8642be22985cb84d7178da' 
  AND token = 'NpMDTKnHsVl+g6z+npxhS6tfPXoQ2WIvilrXFAT5tWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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