Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f28b9ceb8e4816d56c36987c8a6f0f4956e8c9d1274c2718a5493c3756807ce' 
  AND token = 'jHU+u6wzc8NXpd4j20FpI3YhcEuV8qaUoRLBCUfk/Wc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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