Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89c29f10405643fec83e4868eca115b78c26316900d4c2a52ddcffc01c246a1c' 
  AND token = '/zZuJYrECWZopsPL9/nqctRi9gpOYEvMkLlSIxmPdfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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