Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a93da6de81c22e3e497cd39ac9ce3418b65de9e48f23c69e1e312d5185b4948' 
  AND token = 'QuGhx7V6x9NK/1errdcmuRULnPCUZ0ECZdf6wQCCn/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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