Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84cca1cae092772a8aa64dc0da9f00a79a7f7ba0ad43ad8c36e35f721c119282' 
  AND token = 'OjjLlk6NJDxkhYEGBF1Y/tJU669PW7eiswDWGTizQw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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