Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74aae834ff1906c70d5c57bc966cb9b77aac83e9b69b0348fce63699d1fe2f89' 
  AND token = 'nlRxgIAC76BC0jXHEYdJfpodVb2iUeB1xYt0N6H+Bbk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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