Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9499e12bd3d074c0063de3397d4f287574213d6bfc98294e0a10426096b50f49' 
  AND token = '0JjXSI74Lc1fCNc+3MtdwBcwaE8cY438qfy+5siNHls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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