Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'e85821c2606ce4384846fb4b214e76685e9574859867872b6bfd620c40a80c8c' 
  AND token = 'Z7uqXkXranXel0D6D9fvAC9wJg70o7gJsArnrDOZgSw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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