Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3def69c6cce3e8d4a596238b9898771b5a3418d756f19aa0a67361398f360738' 
  AND token = 'bIcv+/vJYjM55vbK1CeVhcQMr/YXmaJ3o71AzsER7Do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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