Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f680df0bfae5a320759aed33f2022cf1f2194a76229816794921aae41b02b6fa' 
  AND token = '92DgGNOsZpFIeKluEW0wLizar2eoAZWbXu+LtCtF/zc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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