Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb479c53a3d4fc418486604f69c5da952b0316ae23c7f87f51764219a97672ea' 
  AND token = 'dehpfwSK28P5Wa0qW6ev24RfBPTKvDQgs5KqWMsDwho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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