Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '396fc8eca8343cc754c367c51295b58fda315bd9b93ca55c3a454f861aa87cfa' 
  AND token = '1EzZQDooqVruS41ht3zJ0Z32o/H0rEaT+xzz0/QnxLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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