Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a6dbc9cc7c17e8059c024943247d740058102aaa6957be4df42bad5719f8994' 
  AND token = '4EVAJUplePtmJSUs7FFUgLwsa1oIb8lFgXVziLLrNKQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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