Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc7e46d9dd521f718aba50fb684c11159f872b33cb991aea9553c0dbaca8a1bb' 
  AND token = 'mWjAvktTQBPd8pS5KIx6d7Im6Yar2fApY0adyHv4xRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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