Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37a370f9f27f9a1781a1ba0a168695332f9f3b594bbe12d44f237c2dac8ff5a3' 
  AND token = 'dUtJ0T5ytdAXGuFq9HRmys6MiOq2qKFfRWo8CnvBPRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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