Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56da1505280fcf4f3e8ed3a464e10dd7516d72c06401978afe41f0b5cb2fe59d' 
  AND token = 'FbHPaDCUAB5GeFncE30WV4tGfrd1WY3JhC0HKJkNzlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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