Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ccada3e509fc723dd06ff72c79a6b0e5ed9c83495b2d5c29b870392d94e6f530' 
  AND token = 'tM3icnp0Iz9obVANF4xmPsVIOQ2+fJ3cnMbOjpCszy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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