Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06ae6dc8704ab14320effd656977972cfd09fe88ff1f51736aab831146e673df' 
  AND token = '02/LHHPXNmBZAgi0Z2cdF3hTrWkj47YPXk04PO9Zs+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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