Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'a510e162ce3a9c44c09978c670bd6f320af30ec537ffddb16ceadd080b1391aa' 
  AND token = 'coqXso2bmJ1czU+yBI9oQKbTGRu7BQT3kwVWvTuufcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}